Friction material with friction modifying layer having symmetrical geometric shapes
US6875711B2 · kind B2 · utility
16Cited by
14References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2002 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Sep 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/699
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A friction material has a first layer of a base material and a second layer of at least one type of friction modifying particle having substantially symmetrical geometric shapes on a top surface of the base material. The second layer has an average thickness of about 30 to about 200 microns and the surface area coverage of about 80 to about 100% such that the top layer has a fluid permeability lower than the first layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.